SOURCE

function writeDocument(variable) {
    document.write(variable + "<br/>");
} 
writeDocument("------------------------");
var oToday=new Date();
writeDocument(oToday);

writeDocument("获取时间对象的年、月、日、时、分、秒------------------------");
writeDocument("年："+oToday.getFullYear());
writeDocument("月："+(oToday.getMonth()+1));
writeDocument("日："+oToday.getDate());
writeDocument("时："+oToday.getHours());
writeDocument("分："+oToday.getMinutes());
writeDocument("秒："+oToday.getSeconds());

writeDocument("设置时间对象的年、月、日、时、分、秒------------------------");
var oMyBirthday=new Date();
oMyBirthday.setFullYear(2019);
oMyBirthday.setMonth(06);
oMyBirthday.setDate(01);
oMyBirthday.setHours(15,59,59,99);
writeDocument(oMyBirthday);

writeDocument("获取星期几------------------------");
writeDocument("今天是星期"+oToday.getDay());

var week=["星期天","星期一","星期二","星期三","星期四","星期五","星期六"];

writeDocument("今天是"+week[oToday.getDay()]);

writeDocument("打印今天是2022年3月22日 星期二 8:55---------------------");

writeDocument("今天是"+oToday.getFullYear()+"年"+(oToday.getMonth()+1)+"月"+oToday.getDate()+"日"
+oToday.getDay()+" "+oToday.getHours()+":"+oToday.getMinutes());